Placket-holder.



No. 718,018. PATENTBD JAN. s, 1903. H. N. NORTHROP. PLAGKET HOLDER.

APPLIUATIONTILED 0013.6, 1902.

K0 MODEL.

UNITED STATES PATENT @FFICE.

HERBERT N. NORTI-IROP, OF SOMERVILLE, MASSACHUSETTS.

PLACKET- HOLDER.

SPECIFICATION torming part of Letters Patent No. 71 8,018, dated January6, 1903.

Application filed October 6, 1902.

To all whom it may concern:

Be it known that I, HERBERT N. NORTHROP, a citizen of the United States,residing at Somerville, in the county of Suffolk and State ofMassachusetts, have invented an Improvement in Placket-Holders, of whichthe following description, in connection with the accompanying drawings,is aspecification, like figures on the drawings representing like parts.

In my application filed October 1, 1902, Serial No. 125,571, I haveillustrated and described a placket holder comprising two plates ormembers, one of which has a headed projection extending therefrom andthe other of which has a slot through which the headed projection isadapted to be inserted, the head of the projection engaging the backside of the slotted member for the purpose of looking the two together.The shank of the projection is made larger than the slot, and the slotis provided with an enlarged portion adapted to receive the shank, thuspreventing the latter from sliding back and forth in the slot when thetwo members are locked together. In the placket-holder described in thesaid application the two members are each in the form of fiat plates,and when the two members are locked together the head of the projectionextends outwardly from theslotted member and forms a projecting portionwhich is liable to catch in the garment and which also subjects thegarment to more or less Wear.

It is the object of my present invention to give to the members of theplacket-holder such a shape that the, head of the projection when thetwo members are locked together is situated in the plane of the body ofthe members, whereby all projecting portions are dispensed with. Toaccomplish this, I have chosen to give to the members of theplacketholder a concavo-convex shape and have extended the projectionfrom the concave face of one of the members. With this construction thetwo members of the placket-holder nest together when in locking positionand the head of the projection lies in the concavity of the slottedmember.

In the drawings, Figure 1 is a view showing the manner of applying myimproved placket-holder. Fig. 2 is a section through the Serial No.126,050. (No modelplacket-holder, showing the two parts locked together.Figs. 3 and 4 are separate views of each member, and Fig. 5 is a viewshowing the way in which the two members are centered before lookingthem together.

The two members of the placket-holder are designated by 3 and 1,respectively, and each will have some suitable means of securing thesame to the garment. The member 3 is provided with the slot- 5, havingthe enlarged portion 6, and the member 4 has extending laterallytherefrom the headed projection comprising the shank portion 7 and thehead 8. In order that the head may not protrude beyond the face of themember 3 when. the parts are locked together, I have made the twomembers in the form of concavo-convex disks, the member 4 having theheaded projection ex tending from the concave face thereof.

In the preferred form of my invention the central portion only of themembers is concavo-convex and the edges 10 thereof are fiat and areprovided with some suitable means for securing them to the garment. Thetwo members are locked together in the same way as described in myabove-mentioned application and the shape of the head 8 is such withrelation to the concavity of the member 3 that when the members arelocked together the said head lies entirely within the concavity, asbest seen in Fig. 2. This I consider as quite important, because whenthe parts are locked together no projecting portions are presented torub against and wear the garment. As seen in Fig. 2, the garment towhich the member3is secured barely touches the head 8, which is receivedentirely in the .concaved portion of the said member.

somewhat, as shown in Figs. 2 and 5, as this construction assists incentering the members when it is desired to lock them together.

When it is desired to fasten the two members together, the member 4 isplaced with relation tothe member 3 as shown in Fig.6, and the roundingedge 11 of the head, by its engagement with the aperture 6, serves tocenter the two members, so that it is only necessary to turn themrelatively to each other to bring the head in alinement with ICO theslot, when by inserting the head through the slot they become lockedtogether.

The headed projection may be made in any suitable way, and in theembodiment of the invention herein shown it is formed by stamping orpunching it out from the metal 4 and bending it at right angles thereto.This particular manner of making the projection, however, is notessential, and the invention would not be departed from if the headedprojection were made and secured to the member 4 in any other suitableway.

It will be noted that the shank 7, as seen in Fig. 2, is thicker thanthe width of the narrow portion of the slot 5 and when the parts arelocked together is received in the enlarged portion 6 of the slot, as inmy abovementioned application. This construction obviously prevents theprojection from sliding back and forth in the slot. This relativemovement of one member with reference to the other is also prevented bythe fact that the member 3 nests into the member 4, owing to theconcavo-convex shape.

One of the advantages which results from the peculiar constructionherein described is that any strain to which the device is subjectedwhich tends to move the devices laterally one on the other, as when thetwo pieces of material held together by the holder are subjected tostrains which tend to pull them apart, is resisted by the nestingportions of the two members instead of entirely by the shank or neck ofthe headed projection, as would be the case in the construction setforth in my above-named application. This makes the present form of myinvention very much stouter and more serviceable than where the disks ormembers are flat. Another advantage inherent in this structure is thatthe two members when locked together nest closely together and take up aminimum amount of room, as seen in Fig. 2.

While one particular way of embodying my invention has been hereinillustrated, it is obvious that the invention may be embodied in otherconstructions not shown, and I therefore desire to reserve to myself theprivilege of making all changes that come within the scope of theappended claims.

Having described my invention, what I claim asnew, and desire to secureby Letters Patent, is

1. A placket-holder comprising two concavo-convex members, one of whichhas a slot and the other a headed projection to engage the slot.

2. A placket-holder comprising two concavo-convex members, one of saidmembers having a slot and the other having a projection extending fromthe concaved face thereof, said projection being constructed to engagethe slot whereby when the two members are locked together the head ofthe projection is received in the concavity of the slotted member.

3. A placket-holder comprising two members having concavo-convexportions, one of said members having a slot provided with an enlargedportion and a headed projection extending from the concave face of theother member, the shank of the projection being larger than the slot,and when the members are locked being received in the enlarged portionof the slot.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERBERT N. NORTHROP.

Witnesses:

LOUIS 0. SMITH, GEo. W. GREGORY.

